Kibana version:
main

Describe the bug:
No case created because of

[ERROR][plugins.actions] Action 'system-connector-.cases' failed: an error occurred while running the action: Failed to bulk create cases: Error: The length of the title is too long. The maximum length is 160.
[ERROR][plugins.taskManager] Task actions:.cases "657e6690-0648-47e0-bc00-5b1fe4e87577" failed: Error: an error occurred while running the action

Steps to reproduce:

1. Create a rule with a very long name
2. Add case action and use kibana.alert.rule.name as group by alert field
3. Trigger an alert
   Note It also has been triggered using kibana.alerts.case_ids as group by fields. I guess it just needs enough case_ids in the array

Expected behavior:
It should create a case

Any additional context:
We have a guardrail function that doesn't seem to be working as expected. It seems to be trimming the rule name and then adds "... - Grouping by [the rule name]" to it which makes the initial trimming pointless. Without having dug to much into the issue it seems like we should check the end result doesn't exceed the max length too.

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